JPH1159294A - Battery charging device for battery unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent running a vehicle by mistake in charging a battery by a work car loaded with a battery unit. SOLUTION: A battery charging device 23 is composed of a charging-state detecting means 24 which detects that a battery is charged by using an external power source, a power-supply detecting means 25 which detects that a key switch, by which an engine turns over, is changed to an ON state, and an alarm means 26 which performs a alarm operation, when the charging-state detecting means 24 detects that the battery is charged by using an external power source and the power-supply detecting means 25 detects that the key switch is changed to an ON state. Therefore, when a vehicle is about to run at the time of charging the battery, the alarm operation is performed, to thereby prevent running a vehicle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery unit of a vehicle which is mounted on a vehicle driven by an engine and operates a working device mounted on the vehicle by a battery. More specifically, the battery unit of the battery unit is charged. And a battery charger for the same.

[0002]

2. Description of the Related Art Normally, a work vehicle such as an aerial work vehicle has a structure in which a work device such as an aerial work device is mounted on a chassis equipped with an engine so that the vehicle can be easily moved to a work site. In addition, the movement of the vehicle uses the driving force of an engine mounted on the chassis, and the working device also operates a hydraulic pump by the engine to operate with hydraulic oil generated from the hydraulic pump. However, in recent years, there has been a demand for low-noise work at work sites, especially at night, etc., and work vehicles equipped with a battery unit are increasing to meet this demand. This battery unit is composed of a large-capacity battery, an electric motor rotating and operated by the electric power of the battery, and a hydraulic pump directly connected to the electric motor. Is performed by stopping the engine mounted on the chassis and generating pressure oil by the battery unit.

[0003]

Since the battery of the above-mentioned battery unit consumes electricity by operating the working device, the battery must be charged and the engine of the chassis is operated. It is difficult to sufficiently charge the battery only by the generator driven by the engine when the vehicle is running (e.g., when traveling). Therefore, this battery is connected to an external power supply with a connection cord when the work vehicle is not in use and is charged. However, if the engine of the vehicle is erroneously operated and run during the charging, there is a problem that the vehicle moves while the connection cord is connected, and the connection cord is disconnected.

The present invention has been made in view of such a problem, and an object of the present invention is to provide a battery charging apparatus for a battery unit configured to prevent a vehicle from being erroneously driven while the battery is being charged. Aim.

[0005]

In order to solve the above-mentioned problems, a battery charging apparatus for a battery unit according to the present invention is mounted on a vehicle that performs a running operation by the power of an engine, and is operated by the battery and the battery. A battery unit for driving a working device mounted on the vehicle using hydraulic pressure generated by the battery, wherein the battery is charged by connecting the battery to an external power supply with a connection cord; Charging state detecting means for detecting that the battery is being charged, power supply detecting means for detecting that a key switch for starting the engine has been turned on, and charging of the battery by the charging state detecting means. When the key switch is turned on, the power detection means detects that the key switch is turned on. It is constituted by warning means for performing warning operation with. A charging state detecting unit that detects that the battery is being charged using an external power supply;
A brake release detecting means for detecting that the parking brake device of the vehicle is released, and the parking brake being detected by the brake release detecting means when the charging state detecting means detects that the battery is being charged. It may be configured by an alarm unit that performs an alarm operation when it detects that the device has been released. Further, further, charging state detecting means for detecting that the battery is being charged using an external power supply, and traveling gear detecting means for detecting that the traveling gear of the vehicle is not in the neutral position or the parking position. An alarming means for issuing an alarm when the traveling gear detecting means detects that the traveling gear is not in the neutral position or the parking position when the charging state detecting means detects that the battery is being charged; The charging state detecting means of these battery chargers may be a detecting means for detecting that the battery and an external power supply are connected by a connection cord.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows an aerial work vehicle 10 including a battery charger according to the present invention. A working device 12 is attached to the rear part of the vehicle body 11 of the aerial work vehicle 10 so as to be horizontally turnable with respect to the vehicle body 11. The working device 12 includes a swivel 13 that is attached to the vehicle body 11 so as to be horizontally swingable, a boom 14 that is attached to the upper part of the swivel 13 so as to be able to move up and down, and that is configured to be telescopic and extendable. A worktable 15 attached to the end of the boom 14 and on which a worker can ride.
The work table 15 has a leveling mechanism (not shown) so that the work table 15 is always kept horizontal regardless of whether the boom 14 is up or down.

[0007] The vehicle body 11 is provided with a battery unit 16. The battery unit 16 includes a battery 17 attached to a lower portion on the rear side of the vehicle body and an electric motor 1 mounted on the side of the vehicle body and rotationally driven by the battery 17 as a power source.
8 and a hydraulic pump 19 that is directly connected to the electric motor 18 and is driven to discharge pressure oil. The hydraulic oil (not shown) is actuated by the hydraulic oil discharged from the hydraulic pump 19, whereby the working device 12 can be turned, raised and lowered, and expanded and contracted.

As described above, when the electric capacity of the battery 17 of the battery unit 16 is reduced by operating the work device 12 using the battery unit 16, it is necessary to charge the battery 17. For this reason, the aerial work vehicle 10 is equipped with a charger 20, which is connected to the charger 20, and a plug 22 a of a connection cord 22 wound around a cable reel 21 provided on the vehicle body 11 is connected to a commercial power outlet. Connect to battery 1
7 is charged.

Next, the charging device 23 according to the present invention will be described with reference to FIG. The charging device 23 includes a charging state detection unit 24, a power supply detection unit 25, and an alarm unit 2.
The charging state detecting means 24 detects that the battery 17 is being charged using an external power supply. The power supply detecting means 25 detects that a key switch (start switch of the engine E) 28 in the cabin 27 has been turned ON to drive the vehicle. Warning means 26
When the charging state detecting means 24 detects that the battery 17 is being charged using an external power supply and the power detecting means 25 detects that the key switch 28 has been turned on, Sound an alarm to the worker on board to prevent the vehicle from running.

Another embodiment of the charging device 29 will be described with reference to FIGS. The charging device 29 includes a charged state detecting unit 24, a brake release detecting unit 30, and an alarm unit 26.
It is detected that the battery 17 is being charged using an external power supply. The brake release detecting means 30 operates the parking brake lever 31 in the cabin 27 to run the vehicle, and detects that the parking brake is released. The alarm means 26 detects that the battery 17 is being charged using an external power supply by the charge state detection means 24 and detects that the brake release detection means 30 has operated to release the parking brake lever 31. When done
An alarm is sounded to a worker in the cabin 27 so as not to run the vehicle.

Another embodiment of the charging device 32 will be described with reference to FIGS. This charging device 32
Are charged state detecting means 24 and traveling gear detecting means 33
And a warning means 26. The charging state detecting means 24 detects that the battery 17 is being charged using an external power supply. The traveling gear detecting means 33 detects that the transmission lever 34 in the cabin 27 has been operated from the neutral position or the parking position to the traveling position in order to make the vehicle travel. The alarm means 26 is connected to the battery 17
Is detected using the external power supply, and when the traveling gear detecting means 33 detects that the transmission lever 34 is not in the neutral position or the parking position, the vehicle is in the cabin 27. Sounds an alarm to notify the operator not to run the vehicle.

In any of these embodiments, the charging state detecting means 24 may determine that charging is being performed by directly detecting the charging current of the battery 17, for example.
Alternatively, it may be detected that the battery 17 and the external power supply are connected by a connection cord. Also, the alarm means 26
Instead of issuing a warning, the vehicle may be restricted from running. For example, when the engine E of the vehicle is not operating, the start signal may be cut off so as not to operate the engine E. When the engine E is operating, the normal engine may be stopped so as to stop the engine E. The engine E may be stopped by sending a signal to a stop solenoid (not shown) provided in the engine.

The charging devices 23, 2 thus constructed
According to Nos. 9 and 32, when charging of the battery 17 of the battery unit 16 of the vehicle using an external power source is started, the charge state detecting means 24 detects and sends a signal to the alarm means 26.
Further, when the operator wants to travel the vehicle, he turns on the key switch 28 in the cabin 27, releases the parking brake lever 31, or operates the transmission lever 34 from the neutral position or the parking position to the traveling position. When the power detection unit 25, the brake release detection unit 30, and the traveling gear detection unit 33 detect that the vehicle has been driven, a signal is sent to the alarm unit 26, and the alarm unit 26 performs an alarm operation based on these signals, and the operator drives the vehicle. It can be prevented not to let it.

[0014]

As described above, according to the present invention,
When the battery of the battery unit of the work vehicle is being charged using an external power supply, an alarm is issued when the vehicle is driven, so that the vehicle can be prevented from running while the battery is being charged. To cut off the connection cord.

[0015]

[Brief description of the drawings]

FIG. 1 is a side view of an aerial work vehicle equipped with a safety device according to the present invention.

FIG. 2 is a block diagram of the safety device.

FIG. 3 is a block diagram of another example of the safety device.

FIG. 4 is a block diagram of another example of the safety device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Aerial work vehicle 24 Charge state detection means 12 Work device 25 Power supply detection means 16 Battery unit 26 Alarm means 17 Battery 28 Key switch 18 Electric motor 30 Brake release detection means 19 Hydraulic pump 33 Traveling gear detection means 22 Connection codes 23, 29, 32 Charging device

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hiroaki Seki 414-1 Higashimine Sugawa, Shinji-mura, Tone-gun, Gunma Prefecture Aichi Corporation Shinji Plant

Claims (4)

[Claims] 1. A battery mounted on a vehicle that performs a running operation by the power of an engine, comprising a battery, an electric motor rotating by the battery, and a hydraulic pump directly connected to the electric motor, and generated by driving the hydraulic pump. A battery charging device for a battery unit that drives a working device mounted on a vehicle by using hydraulic pressure, wherein a charging state detecting unit that detects that the battery is being charged using an external power supply; Power supply detecting means for detecting that a key switch for starting is turned on; and, when the charging state detecting means detects that charging of the battery is being performed, the key switch by the power detecting means. The battery unit is provided with alarm means for performing an alarm operation when it is detected that the battery unit is turned on. Li charging device. 2. The vehicle is mounted on a vehicle that performs a running operation by the power of an engine, and includes a battery, an electric motor rotating by the battery, and a hydraulic pump directly connected to the electric motor, and is generated by driving the hydraulic pump. In a battery charging device of a battery unit that drives a working device mounted on a vehicle using hydraulic pressure, charging state detecting means for detecting that the battery is being charged using an external power supply, Brake release detection means for detecting that the parking brake device has been released, and when the charge state detection means detects that the battery is being charged, the brake release detection means sets the parking brake device to A battery unit, comprising: an alarming means for performing an alarming operation upon detecting the release. Teri charging device. 3. A battery mounted on a vehicle that performs a running operation by the power of an engine, comprising a battery, an electric motor rotating by the battery, and a hydraulic pump directly connected to the electric motor, and generated by driving the hydraulic pump. In a battery charging device of a battery unit that drives a working device mounted on a vehicle using hydraulic pressure, charging state detecting means for detecting that the battery is being charged using an external power supply, Traveling gear detecting means for detecting that the traveling gear is not in the neutral position or the parking position, and when the connection detecting means detects that the battery and an external power supply are connected via the connection cord, The traveling gear is in a neutral position or a parking position by the traveling gear detecting means. Battery charger of the battery unit, characterized in that it comprises a warning means for performing warning operation when it detects the absence to Jishon. 4. The battery charging device for a battery unit according to claim 1, wherein said charging detecting means detects that said battery and an external power supply are connected by a connection cord.